Abstract
Modern science is not linguistically original in hypothesizing the existence of dark matter. For Plotinus, the matter that underlies all perceptible objects, is essentially obscure and describable only in the negative terms of what it lacks by way of inherent properties. In formulating this theory of absolute matter, Plotinus took himself to be interpreting both Plato and Aristotle, with the result that his own position emerges as a highly original and equivocal synthesis of this tradition. Plotinus did not claim that matter is nothing, but the puzzling status he attributes to it can be aptly compared to Berkeley's doctrine that material substance is a self-contradictory notion.